phase shift

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phase shift

[′fāz ‚shift]
(electronics)
The phase angle between the input and output signals of a network or system.
(physics)
A change in the phase of a periodic quantity. Also known as phase change.
A change in the phase angle between two periodic quantities.
(quantum mechanics)
For a partial wave of a particle scattered by a spherically symmetric potential, the phase shift is the difference between the phase of the wave function far from the scatterer and the corresponding phase of a free particle.